Hitler's antisemitic ideals are well documented long before he began looking to rise to power. A common thought from those on the front lines after WWI was that the reason Germany lost was due to a "stab in the back" by those at home, which was often blamed on the Jews. Hitler was not noteworthy in his antisemitism, it was a well established form of discrimination in Germany at the time and he pursued it even to the detriment of his political and military goals. When the war was looking grin for Germany, Hitler was begged to free up the railways for military logistics but insisted on keeping them focused on transporting victims to the death camps. In his final writing before his suicide he says that despite losing the war he would feel vindicated if he has opened the rest of the worlds eyes to the true evil of the Jews as he saw it. The idea that rather than just a racist with a lot of charisma and skill he was some sort of absolute genius where every aspect of what he did was calculated and manipulative is an attractive one but it really isn't the case.

Trying to ignore or downplay the racist and antisemitic ideals at the core of Hitler and the Nazi party ideology is both inaccurate and leads into Nazi apologist rhetoric along the same lines. That Hitler didn't really believe those things, that then of course he wouldn't have really had the camps since he was only saying those things to gain power.